I wouldnt use lawn boy ashless for any reason in any of my engines.If you want just use a good mineral based oil.The best thing to do would be to use pennzoil air cooled,echo premium,sthl,ect at 32-1 and just go for it.

Pennzoil aircooled is not synthetic.This is what the ultralite guys[some of them]use in theres.
I am probably going to start using this oil.[pennzoil]
I have been using Echo premium synthetic for years with no problems ever.
Just havent decided yet.